Christopher Meloni and Mariska Hargitay are sending fans into a frenzy with a steamy behind-the-scenes snapshot.Over the weekend, one Twitter user posted photos showing Meloni and Hargitay on set, portraying their iconic characters — Detectives Elliot Stabler an Olivia Benson — in a passionate kissing scene.«Can y'all imagine if one day @Chris_Meloni and @Mariska posts a picture like this pretending they are kissing with the caption #Rehearsing,» the fan wrote.